343313231 has 2 divisors, whose sum is σ = 343313232. Its totient is φ = 343313230.

The previous prime is 343313227. The next prime is 343313237. The reversal of 343313231 is 132313343.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 343313231 - 2² = 343313227 is a prime.

It is a super-2 number, since 2×343313231² = 235727949159318722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 343313197 and 343313206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343313237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171656615 + 171656616.

It is an arithmetic number, because the mean of its divisors is an integer number (171656616).

Almost surely, 2^343313231 is an apocalyptic number.

343313231 is a deficient number, since it is larger than the sum of its proper divisors (1).

343313231 is an equidigital number, since it uses as much as digits as its factorization.

343313231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 23.

The square root of 343313231 is about 18528.7136898383. The cubic root of 343313231 is about 700.2130174829.

Adding to 343313231 its reverse (132313343), we get a palindrome (475626574).

The spelling of 343313231 in words is "three hundred forty-three million, three hundred thirteen thousand, two hundred thirty-one".